4th March 1918
Western Front
France conducts a large-scale raid against German trenches near Verdun, advancing on a 1200-metre line and taking 150 German prisoners.
Eastern Front
Despite the peace treaty signed at Brest-Litovsk, German troops take the city of Narva (Estonia) and Austro-Hungarian troops continue advancing in Ukraine.
Germans claim capture of 6,000 officers, 57,000 men, 2,600 guns, and 5,000 machine-guns in recent invasion.
Aviation
First flight: Airco DH.10 Amiens
Political, etc.
Soviet Russia signs the Treaty of Brest-Litovsk, renouncing its claims in Finland, Ukraine, Belarus, and the Baltic states to the Central Powers. Russia is out of the war.
Romania also declares it is ready to negotiate a formal peace with the Central Powers.
Ship Losses:
Antioco Accame (Italy) The cargo ship was sunk in the Atlantic Ocean west of Gibraltar (35°11′N 7°55′W) by
SM U-155 ( Kaiserliche Marine). Her crew survived.
Castle Eden (United Kingdom) The collier was torpedoed and sunk in the Atlantic Ocean 4 nautical miles (7.4 km) south south east of the Inishtrahull Lighthouse, County Donegal by
SM U-110 ( Kaiserliche Marine) with the loss of a crew member.
Clan Macpherson (United Kingdom) The cargo ship was torpedoed and sunk in the Mediterranean Sea 24 nautical miles (44 km) north of Cape Serrat, Tunisia (37°47′N 9°05′E) by
SM UC-27 ( Kaiserliche Marine) with the loss of eighteen of her crew.
Geneva (United Kingdom) The coaster struck a submerged wreck and was beached. She sank the next day.
Lady Londonderry (United Kingdom) The coaster collided with another vessel and sank.
Northfield (United Kingdom) The collier was torpedoed and sunk in the Bristol Channel 25 nautical miles (46 km) south west of Lundy Island, Devon (50°55′15″N 4°45′30″W) by
SM U-60 ( Kaiserliche Marine) with the loss of fifteen crew.
Polkerris (France) The cargo ship was sunk in the English Channel 10 nautical miles (19 km) south east of Portland Bill, Dorset, United Kingdom by
SM UB-80 ( Kaiserliche Marine). Her crew survived.
